A positive whole number or zero: such as 0, 1, 2, 3, 4, 104, 3238
- Less than zero.
- A quantity, number, angle, velocity, or direction in a sense opposite to another of the same magnitude indicated or understood to be positive.
net weight 净重
Tthe weight of the contents only, excluding the weight of the container or packaging.
A polygon having nine angles and nine sides.
- A perpendicular line or plane, especially one perpendicular to a tangent line of a curve, or a tangent plane of a surface, at the point of contact.
- The portion of this perpendicular line included between its point of contact with the curve and the x-axis.
normal distribution 正态分布
not equal 不等于
number line 数线
number pattern 数字模式
number sense 数感